if u can sacrifice ur sleep, ur karok time, ur date & rempit time and become a diligent person, i dunt see any problem if u wanna proceed in science. but u need to compete hardly with others for enrollment. there's always PTPTN and IPTS if u unable to get scholarship and IPTA. if u score at least 3.5 CGPA in the first year definitely u can apply any scholarship offered by some foundations or private firms. PTPTN is now convertible to scholarship depending on ur final year CGPA.

choose ur path wisely